People look at the stamps displayed during a major exhibition to commemorate the 40th anniversary of China's reform and opening-up at the National Museum of China in Beijing, capital of China, Dec. 22, 2018. The exhibition has received more than 1.85 million visitors since its opening. (Xinhua/Li He)
A woman looks at the stamps displayed during a major exhibition to commemorate the 40th anniversary of China's reform and opening-up at the National Museum of China in Beijing, capital of China, Dec. 22, 2018. The exhibition has received more than 1.85 million visitors since its opening. (Xinhua/Li He)
A man looks at the stamps displayed during a major exhibition to commemorate the 40th anniversary of China's reform and opening-up at the National Museum of China in Beijing, capital of China, Dec. 22, 2018. The exhibition has received more than 1.85 million visitors since its opening. (Xinhua/Li He)
People look at the stamps displayed during a major exhibition to commemorate the 40th anniversary of China's reform and opening-up at the National Museum of China in Beijing, capital of China, Dec. 22, 2018. The exhibition has received more than 1.85 million visitors since its opening. (Xinhua/Li He)
A visitor takes photos of the stamps displayed during a major exhibition to commemorate the 40th anniversary of China's reform and opening-up at the National Museum of China in Beijing, capital of China, Dec. 22, 2018. The exhibition has received more than 1.85 million visitors since its opening. (Xinhua/Li He)